@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root {
  color-scheme: light;
  --ink: #14221e;
  --muted: #5f6c65;
  --forest: #0b3028;
  --forest-2: #17493c;
  --lime: #d8ed69;
  --paper: #f7f8f4;
  --white: #fff;
  --line: #dce2dc;
  --font-body: 'DM Sans', 'Segoe UI', sans-serif;
  --font-display: 'Manrope', 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--font-body); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { color: var(--forest); background: var(--lime); }

.page-width { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
.section-pad { padding: 112px 0; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link:focus { position: fixed; z-index: 50; top: 12px; left: 12px; padding: 10px 16px; background: var(--lime); color: var(--forest); }

.site-header { position: sticky; z-index: 20; top: 0; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(11,48,40,.09); backdrop-filter: blur(14px); }
.header-inner { width: min(1320px, calc(100% - 64px)); min-height: 82px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-logo { width: 54px; height: 54px; flex: 0 0 auto; object-fit: contain; }
.brand-name { display: flex; flex-direction: column; color: var(--forest); font-family: var(--font-display); font-size: 18px; font-weight: 800; letter-spacing: .04em; line-height: 1.1; }
.brand-caption { padding-top: 5px; color: #718078; font-family: var(--font-body); font-size: 9px; font-weight: 600; letter-spacing: .11em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; gap: clamp(20px, 3vw, 42px); color: #45524b; font-size: 13px; font-weight: 600; }
.primary-nav a { transition: color .2s ease; }
.primary-nav a:hover { color: var(--forest-2); }
.primary-nav .nav-contact { display: inline-flex; align-items: center; gap: 14px; padding: 11px 16px; color: var(--forest); border: 1px solid #b7c5bc; border-radius: 2px; }
.nav-contact span { font-size: 17px; }
.menu-toggle { display: none; }

.hero { position: relative; min-height: min(740px, calc(100vh - 82px)); display: flex; align-items: center; overflow: hidden; color: var(--white); background: var(--forest) url('assets/brand/aseemm-energy-transition-hero.png') center 53% / cover no-repeat; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,31,25,.94) 0%, rgba(5,31,25,.84) 33%, rgba(5,31,25,.43) 59%, rgba(5,31,25,.06) 100%), linear-gradient(0deg, rgba(5,31,25,.22), transparent 45%); }
.hero-content { position: relative; z-index: 1; padding-top: 34px; padding-bottom: 68px; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 22px; color: #477163; font-size: 11px; font-weight: 700; letter-spacing: .16em; line-height: 1.4; text-transform: uppercase; }
.eyebrow > span { display: inline-block; width: 25px; height: 2px; background: #86a68e; }
.hero-eyebrow { color: #e0ebdf; }
.hero-eyebrow > span { background: var(--lime); }
.hero h1, .section-heading h2, .approach-intro h2, .about-copy h2, .contact-layout h2 { margin: 0; font-family: var(--font-display); font-weight: 600; letter-spacing: -.055em; }
.hero h1 { max-width: 760px; font-size: clamp(52px, 7.2vw, 92px); line-height: .99; }
.hero-copy { max-width: 565px; margin: 28px 0 0; color: #e0e8e2; font-size: 18px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 35px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 19px; padding: 0 20px; border: 0; border-radius: 2px; font-size: 13px; font-weight: 700; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-lime { color: var(--forest); background: var(--lime); }
.button-lime:hover { background: #e4f58b; }
.button span { font-size: 18px; line-height: 1; }
.text-link { display: inline-flex; align-items: center; gap: 13px; color: var(--forest); font-size: 13px; font-weight: 700; }
.text-link span { font-size: 18px; transition: transform .2s ease; }
.text-link:hover span { transform: translate(3px, -2px); }
.text-link-light { color: #f4f7f3; }
.hero-note { display: flex; align-items: center; gap: 12px; margin-top: 66px; color: #cbd7cf; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.note-rule { display: inline-block; width: 37px; height: 1px; background: var(--lime); }
.hero-index { position: absolute; right: 32px; bottom: 25px; color: rgba(255,255,255,.72); font-size: 10px; letter-spacing: .16em; }

.intro-band { padding: 28px 0; color: #f4f7f3; background: var(--forest); }
.intro-grid { display: grid; grid-template-columns: 1fr 2fr auto; align-items: center; gap: 32px; }
.intro-label { margin: 0; color: #a8c1b5; font-size: 11px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.intro-statement { max-width: 590px; margin: 0; font-family: var(--font-display); font-size: 19px; font-weight: 500; line-height: 1.4; }
.intro-band .text-link { color: var(--lime); white-space: nowrap; }

.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; margin-bottom: 50px; }
.section-heading h2 { font-size: clamp(38px, 5.4vw, 64px); line-height: 1.06; }
.section-lede { max-width: 410px; margin: 0 0 6px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.services-section { background: var(--paper); }
.service-tools { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 19px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.filter-list { display: flex; align-items: center; gap: 7px; overflow-x: auto; scrollbar-width: thin; }
.filter-button { flex: 0 0 auto; padding: 8px 12px; color: #637068; background: transparent; border: 1px solid transparent; border-radius: 2px; cursor: pointer; font-size: 11px; font-weight: 600; transition: background .2s ease, color .2s ease; }
.filter-button:hover { color: var(--forest); background: #edf1e9; }
.filter-button.is-active { color: var(--white); background: var(--forest); }
.service-search { display: flex; flex: 0 0 206px; align-items: center; gap: 9px; padding: 9px 11px; border-bottom: 1px solid #bdc9c0; }
.service-search svg { width: 17px; height: 17px; fill: none; stroke: #627168; stroke-width: 1.6; }
.service-search input { width: 100%; min-width: 0; color: var(--ink); background: transparent; border: 0; outline: 0; font-size: 12px; }
.service-search input::placeholder { color: #78857c; }
.results-count { min-height: 20px; margin: 14px 0 5px; color: #78857c; font-size: 11px; }
.service-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: 46px; border-top: 1px solid var(--line); }
.service-item { border-bottom: 1px solid var(--line); }
.service-item[hidden] { display: none; }
.service-item summary { display: grid; grid-template-columns: 42px 1fr 28px; align-items: center; gap: 13px; min-height: 91px; padding: 17px 0; list-style: none; cursor: pointer; }
.service-item summary::-webkit-details-marker { display: none; }
.service-number { align-self: start; padding-top: 4px; color: #9aa69e; font-size: 10px; font-weight: 600; letter-spacing: .08em; }
.service-title-wrap { display: flex; flex-direction: column; gap: 3px; }
.service-category { color: #718078; font-size: 9px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.service-title { color: #20332b; font-family: var(--font-display); font-size: 16px; font-weight: 600; line-height: 1.35; }
.service-plus { position: relative; width: 25px; height: 25px; border: 1px solid #c4cec6; border-radius: 50%; transition: background .2s ease, transform .2s ease; }
.service-plus::before, .service-plus::after { position: absolute; top: 11px; left: 7px; width: 9px; height: 1px; content: ''; background: var(--forest); }
.service-plus::after { transform: rotate(90deg); transition: transform .2s ease; }
.service-item[open] .service-plus { background: var(--lime); border-color: var(--lime); }
.service-item[open] .service-plus::after { transform: rotate(0); }
.service-detail { padding: 0 37px 21px 55px; }
.service-detail p { max-width: 520px; margin: 0; color: #5e6c63; font-size: 13px; line-height: 1.75; }
.no-results { padding: 28px; color: var(--muted); background: #eef1ec; text-align: center; font-size: 14px; }

.approach-section { color: #f4f7f3; background: var(--forest); }
.approach-layout { display: grid; grid-template-columns: .95fr 1.05fr; align-items: start; gap: clamp(55px, 10vw, 145px); }
.eyebrow-light { color: #b9c9bf; }
.eyebrow-light > span { background: var(--lime); }
.approach-intro h2 { max-width: 520px; font-size: clamp(38px, 4.7vw, 58px); line-height: 1.05; }
.approach-intro > p:not(.eyebrow) { max-width: 440px; margin: 25px 0 23px; color: #c5d3ca; font-size: 15px; line-height: 1.8; }
.approach-steps { padding-top: 14px; }
.approach-step { position: relative; display: grid; grid-template-columns: 45px 1fr; gap: 15px; min-height: 140px; padding-bottom: 31px; }
.approach-step:last-child { min-height: auto; padding-bottom: 0; }
.step-index { padding-top: 3px; color: var(--lime); font-size: 10px; font-weight: 700; letter-spacing: .1em; }
.approach-step h3 { margin: 0; font-family: var(--font-display); font-size: 21px; font-weight: 600; letter-spacing: -.02em; }
.approach-step p { max-width: 410px; margin: 8px 0 0; color: #c5d3ca; font-size: 13px; line-height: 1.7; }
.step-line { position: absolute; top: 28px; bottom: 11px; left: 4px; width: 1px; background: rgba(211,232,217,.28); }
.approach-step:last-child .step-line { display: none; }

.experience-section { background: #fff; }
.experience-heading { align-items: flex-end; margin-bottom: 40px; }
.experience-heading .section-lede { max-width: 440px; font-size: 14px; }
.client-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.client-logo { min-width: 0; min-height: 135px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; margin: 0; padding: 18px 15px 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: center; }
.client-logo img { width: min(100%, 165px); height: 57px; object-fit: contain; mix-blend-mode: multiply; }
.client-logo figcaption { color: #657169; font-size: 10px; font-weight: 600; line-height: 1.35; }

.about-section { background: #edf1ea; }
.about-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(45px, 9vw, 130px); }
.about-side { display: flex; flex-direction: column; align-items: flex-start; gap: 42px; }
.about-side .eyebrow { margin-bottom: 0; }
.about-logo { width: min(100%, 230px); height: auto; object-fit: contain; mix-blend-mode: multiply; }
.about-copy h2 { max-width: 700px; font-size: clamp(39px, 5vw, 64px); line-height: 1.06; }
.about-copy p { max-width: 690px; color: #5e6b63; font-size: 14px; line-height: 1.8; }
.about-copy .about-lede { margin: 25px 0 16px; color: #31443a; font-family: var(--font-display); font-size: 19px; font-weight: 500; line-height: 1.55; }
.association-note { display: flex; align-items: center; gap: 24px; margin-top: 40px; padding-top: 22px; border-top: 1px solid #d1d9d1; }
.association-note > span { color: #718078; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.association-note img { width: 200px; height: 72px; object-fit: contain; object-position: left center; mix-blend-mode: multiply; }

.contact-section { position: relative; overflow: hidden; padding: 94px 0 100px; color: #f5f8f3; background: #102b25; }
.contact-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 80px; }
.contact-layout h2 { max-width: 620px; font-size: clamp(43px, 6vw, 72px); line-height: 1.02; }
.contact-action { max-width: 380px; }
.contact-action p { margin: 0 0 24px; color: #c7d4cb; font-size: 15px; line-height: 1.75; }
.contact-social { display: block; width: fit-content; margin-top: 20px; color: #dce8df; font-size: 12px; font-weight: 600; }
.contact-social span { margin-left: 8px; color: var(--lime); }
.contact-watermark { position: absolute; right: -21px; bottom: -94px; color: rgba(255,255,255,.035); font-family: var(--font-display); font-size: clamp(130px, 25vw, 350px); font-weight: 800; letter-spacing: -.1em; line-height: 1; pointer-events: none; }

.site-footer { color: #526057; background: #f7f8f4; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 34px 0; }
.brand-footer .brand-name { font-size: 16px; }
.footer-top > p { max-width: 290px; margin: 0; color: #68766d; font-size: 11px; }
.footer-top > a:last-child { color: var(--forest); font-size: 12px; font-weight: 600; }
.footer-bottom { display: flex; justify-content: space-between; padding: 13px 0 19px; border-top: 1px solid var(--line); color: #87928a; font-size: 10px; }
.footer-bottom a { color: #66736b; }

@media (max-width: 980px) {
  .primary-nav { gap: 18px; }
  .intro-grid { grid-template-columns: .8fr 1.5fr; }
  .intro-grid .text-link { grid-column: 2; }
  .service-tools { align-items: flex-start; flex-direction: column; }
  .filter-list { width: 100%; }
  .service-search { flex-basis: auto; width: min(100%, 330px); }
  .client-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  html { scroll-padding-top: 72px; }
  .page-width { width: min(100% - 40px, 560px); }
  .section-pad { padding: 78px 0; }
  .header-inner { width: calc(100% - 40px); min-height: 70px; }
  .brand-name { font-size: 16px; }
  .brand-caption { font-size: 8px; }
  .menu-toggle { display: flex; width: 42px; height: 42px; flex-direction: column; align-items: center; justify-content: center; gap: 6px; border: 1px solid #d6dfd8; border-radius: 2px; background: #fff; cursor: pointer; }
  .menu-toggle > span:not(.sr-only) { width: 17px; height: 1.5px; background: var(--forest); transition: transform .2s ease; }
  .menu-toggle[aria-expanded="true"] > span:nth-last-child(2) { transform: translateY(3.75px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .primary-nav { position: absolute; top: 70px; right: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 8px 20px 18px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 12px 18px rgba(11,48,40,.08); }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: 13px 3px; border-bottom: 1px solid #edf0ec; }
  .primary-nav .nav-contact { justify-content: space-between; margin-top: 12px; padding: 12px 14px; border: 1px solid #b7c5bc; }
  .hero { min-height: 690px; min-height: min(760px, calc(100svh - 70px)); background-position: 58% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(5,31,25,.92), rgba(5,31,25,.69) 70%, rgba(5,31,25,.35)), linear-gradient(0deg, rgba(5,31,25,.25), transparent 40%); }
  .hero-content { padding-top: 35px; padding-bottom: 60px; }
  .hero h1 { max-width: 570px; font-size: clamp(48px, 11vw, 72px); }
  .hero-copy { max-width: 480px; font-size: 16px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 19px; }
  .hero-note { margin-top: 48px; font-size: 9px; }
  .hero-index { right: 20px; bottom: 18px; }
  .intro-band { padding: 23px 0; }
  .intro-grid { grid-template-columns: 1fr; gap: 9px; }
  .intro-statement { font-size: 18px; }
  .intro-grid .text-link { grid-column: auto; margin-top: 5px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 17px; margin-bottom: 33px; }
  .section-heading h2 { font-size: clamp(38px, 9vw, 54px); }
  .section-lede { font-size: 14px; }
  .desktop-break { display: none; }
  .service-tools { gap: 12px; }
  .filter-list { padding-bottom: 4px; }
  .filter-button { padding-inline: 10px; }
  .service-search { width: 100%; }
  .service-list { grid-template-columns: 1fr; }
  .service-item summary { grid-template-columns: 31px 1fr 27px; gap: 10px; min-height: 83px; }
  .service-title { font-size: 15px; }
  .service-detail { padding: 0 28px 19px 41px; }
  .approach-layout { grid-template-columns: 1fr; gap: 40px; }
  .approach-intro h2 { font-size: clamp(39px, 9vw, 54px); }
  .approach-step { min-height: 137px; }
  .client-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .client-logo { min-height: 123px; padding: 14px 9px 12px; }
  .client-logo img { height: 50px; }
  .client-logo figcaption { font-size: 9px; }
  .about-layout { grid-template-columns: 1fr; gap: 30px; }
  .about-side { min-height: auto; }
  .about-side { gap: 20px; }
  .about-logo { width: 132px; }
  .about-copy h2 { font-size: clamp(40px, 9vw, 58px); }
  .about-copy .about-lede { font-size: 17px; }
  .association-note { gap: 16px; margin-top: 29px; }
  .association-note img { width: 170px; }
  .contact-section { padding: 76px 0 82px; }
  .contact-layout { grid-template-columns: 1fr; gap: 29px; }
  .contact-layout h2 { font-size: clamp(43px, 10vw, 62px); }
  .contact-watermark { right: -8px; bottom: -34px; font-size: 33vw; }
  .footer-top { align-items: flex-start; flex-direction: column; gap: 15px; padding: 29px 0; }
  .footer-top > p { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}